Pulling device



y 1950 A. e. MAASDAM 2,506,029

PULLING DEVICE Filed Jan. 28, 1947 2 Sheets-Sheet 1.

grwwwto'o Hbra/zam 6. -17 acts da m abtoww A. G. MAASDAM PULLING DEVICEMay 2, 1950 2 Sheets-Sheet 2 Filed Jan. 28, 1947 gwuam/fm fibraham G'.Maasdam Patented May 2, 1959 UNITED STATES PATENT OFFICE This inventionrelates to a pulling device and it is an object of the invention toprovide a device or apparatus of this kind which can be employed toequal advantage as a wire stretcher, hoist, winch, load binder or inconnection with such other operations where extreme pull is required toeffect the desired result.

It is also an object of the invention to provide a device of this kindwhich can :be operated in any position and which is especiallyadvantageous in pulling operations such as drawing a stranded vehicleout of mud or sand, in pulling small stumps, and kindred work.

An additional object of the invention is to provide a device of thiskind including a body carrying a winding drum, together with a lever forrotating the drum in a direction to Wind a pulling cable thereon, withfurther means for the ready release of the lever from working engagementwith the drum when it is desired to unwind the cable.

A still further object of the invention is to provide a device of thiskind comprising a body carrying a winding drum for the pulling cable,together with a lever provided with a pawl for operative engagement witha winding drum to intermittently rotate the drum and wherein the body isprovided with a pawl for coaction with the drum to normally hold thesame against retrograde rotation and, furthermore, wherein means areprovided to allow the simultaneous movement of both of the pawls intoreleased position when it is desired to have the cable unwind from thedrum.

The invention consists in the details of construction and in thecombination and arrangement of the several parts of my improved deviceor apparatus whereby certain advantages are attained as will behereinafter more fully set forth.

In order that my invention may be better understood, I will now proceedto describe the same with reference to the accompanying drawings,wherein:

Figure 1 is a view in perspective of the device or apparatus constructedin accordance with an embodiment of my invention;

Figure 2 is a view in top plan with a portion broken away;

Figure 3 is a view in side elevation;

Figure 4 is an enlarged fragmentary view partly in section and partly inside elevation illustrating in detail certain features of the device orapparatus as herein embodied; and

Figure 5 is a detailed view partly in section and 4 Claims. (Cl. 254164)2 partly in elevation illustrating a slightly modified form ofinvention.

In the embodiment of the invention as illustrated in the accompanyingdrawings, B denotes an elongated body of a skeleton type and whichincludes the side members I of desired length and substantially inparallelism, each of said members being of a length coextensive inlength with the other. The opposite end portions of the members i aredisposed outwardly in convergence as at 2 and 3. The outer meeting endsof the arms 2 are continued by the relatively short extension arms 4 inclose contact one with the other. These short arms 4 are snuglyreceivedbetween the overlying sections 5 of a head H ofdesired size andconfiguration and the sections of the head 5 are maintained in assembledrelation by the rivet 6 or the like disposed through the inner portionsof said overlying sections 5 and through the short arms 4.

In swivel connection, as at l, with the outer portion of the head H isan end portion of the shank 8 of a double swivel hook S. The head of theswivel hook is provided with the outstanding spaced short lugs 9 whichconstitute a clevis and through which is adapted to be inserted in aconventional manner a clevis pin I 0.

The converging extremities of the arms 3 are also continued by therelatively short arms H in close contact one with the other and these.short arms 3 are straddled by the side members 12 of a substantiallyU-shaped clip [4. These arms 12 are held to the arms H by a rivet 15 orthe like which also provides means for mounting or holding the clevisshackle l6. This shackle l 6 has coupled thereto, as at IT, in aconventional i manner, a slip hook l8. At substantially the longitudinalcenter of the body B the side members I have interposed therebetween andsupported thereby a shaft l-9,

on which is mounted a winding drum D positioned between andsubstantially bridging the, This drum D atv space between the members I.its ends is provided with the surrounding flanges 20 and 21, the flange2| constituting a ratchet gear whereby the drum may be intermittentlyrotated in one direction to wind thereon the pulling cable 0.

arms 24 in close contact with each other and held in assembled relationby one or more rivets 25. The outer extremities of these arms 24 aredisposed on a slight angle with respect to the inner portion of the arm24 as indicated at 26 to provide a more convenient hand grasp tofacilitate the desired swinging of the lever L and particularly when itis desired to rotate the drum D to wind the cable C thereon to effectthe required pull.

The arms "22 closely adjacent to the arms 23 have interposedtherebetween and supported thereby a shaft 2? on which is freely mountedthe hub sleeve 28 for the elongated pawl 29 for coaction with theratchet 2|. As is particularly illustrated in Figure 3 of the drawings,this pawl 29 is normally in eifective engagement with the ratchet ii tolock the drum D against rotation in one direction but engaged therewithin iamanner whereby swinging movement of the lever L in one directionwill effect the desired rotation of the drum to wind the cable Cthereon. The

main purpose, of course, of this pawl :29 is to eifect the rotation ofthe drum D.

The hub sleeve 28 has extending therefrom the upwardly and inwardlycurved operating arm 36 of desired length and which has its outer orfree extremity normally positioned outwardly of the lever L, asillustrated in Figure 3. Operatively engaged as at 3| with the innerportion of this arm '30 and one of the side arms Zii of the lever L, asat 32, is a torsionspring -33 which encircles the hub sleeve 28 of pawl27. The outer end portion of this spring 33 is operatively engaged withan inwardly-directed lug 34 carried by-the arm 2-2.

The drum D is normally held against retrograde rotation by a second pawl34. This pawl 34 is carried'by an endportion of a hub sleeve 35 freelymounted on a shaft 33 bridging the space and supported by the arms I ata point closely adjacent to the arms 2 of the body B. This pawl 34coaots with the ratchet flange 2| and is constantly urged into operativeengagement with said ratchet flange by a torsion spring 31 anchored atone extremity as at 38 to a lugextending inwardly from oneof the sidemembers I of the body B while the opposite end of this torsion spring 31is operatively engaged as at 39 with the pawl 34. While this pawl34holds thedrurn D against retrograde rotation, it is to be noted thatit offers no hindranceor obstruction to the desired rotationof thedrumupon working-movement of the lever L.

When the pawl 29 isnreleasedrfromthe ratchet drum by operation of thearm30, andthe lever L is -s'wung substantially to the hunter its backwardmovement, the pawl 29 willengage and-free pawl 34 into released.position, thus allowing-unhindered unwinding of the cable C from thedrum D.

The sleeve 35 is provided with the operating lever or handle member4il-disposed on-the-same side of the bodyB as the lever Land which leveror-handle member-4ll permits a-ready releasing movement to be impartedtothepawl 34..

The clip l4 provides a guide throughrWhich-the cable C-is disposed andthe end portion :of the cable C outwardly of this clip or guidei i .hasatta'ched thereto a clamp A. This outerextremity of the cable C hasafiixed thereto a'head'Eprovided with the outstanding :spaced arms'42-be-- or opposite end portion of this rod 44 is oper-,

atively engaged with an-outstanding arm 45 of a cam 46. This camconstitutes a clamping element which coacts with the flange 41 disposedalong a marginal portion of an elongated body plate 48 of desireddimensions.

In advance of the cam 46 at the side remote from the flange 41, theplate 48 is provided with an inwardly disposed flange 49 through whichthe rod 44 is freely disposed and therefore maintained in substantiallya fixed line of travel, although it is to be understood that the openingwithin this flange 49 is of sufiicient diameter to allow such lateralmovement of the rod 44 as may be required to allow the same to haveunphampered movement as the cam 46 is swung into either active orinactive position.

It is believed to be readily apparent that in the use of the apparatusas herein embodied either as a wire stretcher, a bale carrier or for anyother purpose, the strain imposed upon the cable C upon proper operationof the lever L will exert such pull upon the arm 45 of the cam toeffectively maintain the said-camin tight clamp-' ing engagementwith'the strand passed between the working edge of the cam 43 and theflange 4-1. In other words, the greater the pull upon the cable C,,thetighter the clamping action.

The cable C is of a performed wire rope of a type possessing .a certaindegree of inherent resiliency, yet sufficiently flexible to wind orunwind relative to the drum D. This is of advantage because when thepawls 29 and 34 are released from the drum D, the cable C will tend toautomatically loosen itself on the drum D and the portion of the cable 0within the confineslof the body B will have atendency to assume 'astraightv position.

To minimize injury to the user and also, of course, to assure themaintenance of the cable C wound-upon the drum D, a guard or fender G isprovided. This guard or fender G comprises an elongated strip of metalof a width substantially equal to the width between thefianges 20 and 2|of the drum D and one end vportion off this strip .is anchored as at 50,to a cross member 5| fixed to'the side arms I at a pointpreferablyadjacent .to the arms 3. This guard is disposed on proper radius aroundthe drum D but spaced from the periphery thereof a distal-ice sufficientto allow the desired winding of the cable C upon the-drum.

It has been found advisable in a number of instancesto employtheembodiment of the invention as illustrated in Figure 1 wherein isillustrated another means for attaching the flexiblev member or cable:to the .drum. Ingthe embodiment'of theinvention, the windingdrum Wisprovided. in its; periphery .andpreferably adjacent to an end flange :52thereof with a =.circ,umfer-- entiall-y disposed slot 53 extending aboutone fourth the way around the drum. This sloth-3 graduallyzincreasesindepth from one end toward the other wherebyone end of the slotprovides.

a shoulder 54 disposed substantially radialxofthe drum W. As is clearlyillustrated in Figurer5, thebottom lwallrof .this slot -43 .is-disposedon-such a curvature as to allow the inner or connected extremity of thecabletoeifectivelywind on the;

drum and ma manner whereby the attachment elfective-winding. of thecable.

As-iszshownin Figure ,5, one extremity of thecable or flexible memberFis threaded through an opening 55 disposed through the peripheralportion .of the drum W beyondthe shoulder 1-54 53 and at the bottom ofsuch shoulder. This opening 55 as herein disclosed is also substantiallyat right angles to the shoulder 54.

The outer portion of the shoulder 55 is enlarged as at 55 by an outwardtaper whereby a suitable tapered sleeve head may be applied to theextremity of the cable F and so fits within the enlarged portion 56 toassure the desired effective maintenance of the securement of theflexible member F to the drum W.

Rotatably supported between the side members I of the body B in advanceof the drum D is a roller 57 with which the cable engages to assuredesired travel of the cable C relative to the body B.

It is also to be stated that the plate 48 which is carried by the flangell of the clamp A serves as a safety measure or guard to protect thehand particularly when applying the clamp to barbed wire.

It is also to be stated that the shafts I9, 21', 3t and 57 have theirextremities which are directed through the side members reduced so thatthe intermediate portion of each of said shafts i9, 27, 36 and 5? servesas a medium to maintain the side members i of the body B in perfectalignment.

From the foregoing description it is thought to be obvious that apulling device constructed in accordance with my invention isparticularly well adapted for use by reason of the convenience andfacility with which it may be assembled and operated.

I claim:

1. A pulling device comprising an elongated body including a pair offrame members juxtaposed at their respective ends and spaced apart inparallel relation at an intermediate portion thereof, the membersdiverging between the ends and intermediate portion, means securing themembers together at the respective ends, a drum rotatably supportedbetween the members at the intermediate portion, means forintermittently rotating the drum, a cable adapted to wind on the drumand a guard member extending part way around the drum for limitingoutward movement of the cable, the ends of the guard being secured tothe body by cross members extending between the frame members.

2. A pulling device comprising an elongated body including a pair offrame members juxtaposed at one end and spaced apart in parallelrelation at an intermediate portion thereof, the members divergingbetween said one end and the intermediate portion, means for securingthe members together at said one end, a drum rotatably supported betweenthe members at the intermediate portion, a cable adapted to wind on thedrum, means for intermittently rotating the drum to wind the cablethereon, means for holding the drum against retrograde movement, atwo-part member having a portion secured to said one end by said meansfor securing the members together at said one end, and having a portionextending therebeyond, the extending portion having recess meanstherein, a shank mounted to swivel about the longitudinal axis of thebody having means thereon seated in the recess for preventing separationof the shank and two-part member, a clevis at one end of said shank, andat least one hook member projecting laterally of the shank.

A pulling device comprising an elongated body including a pair of framemembers juxtaposed at one end and spaced apart in parallel relation atan intermediate portion thereof, the members diverging between said oneend and the intermediate portion, means for securing the memberstogether at said one end, a drum rotatably supported between the membersat the intermediate portion, a cable adapted to wind on the drum, meansfor intermittently rotating the drum to wind the cable thereon, meansfor holding the drum against retrograde movement, a two-part memberhaving a portion secured to said one end by said means for securing thememhere together at said one end, and having a portion extendingtherebeyond, the extending portion having recess means therein, a shankmounted to swivel about the longitudinal axis of the body having meansthereon seated in the recess for preventing separation of the shank andtwo-part member, a clevis at one end of said shank, and a pair of hooksprojecting laterally in opposite directions from the shank.

4. A pulling device comprising an elongated body including a pair offrame members juxtaposed at their respective ends and spaced apart inparallel relation at an intermediate portion thereof, the membersdiverging between the ends and intermediate portion, means securing themembers together at the respective ends, a drum rotatably supportedbetween the members at the intermediate portion, the drum having flangesat the sides thereof, means for intermittently rotating the drum, acable adapted to wind on the drum, and a guard member extending part wayaround the drum for limiting outward movement of the cable, the guardmember comprising a strip of metal of a width to be disposed betweensaid flanges and having ends engaging cross members extending betweenthe frame members for securing it to the body.

ABRAHAM G. MAASDAM.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 552,044 Crooker Dec. 24, 18951,206,019 Moore Nov. 28, 1916 1,236,616 Snow Aug. 14, 1917 1,459,032Norling June 19, 1923 1,466,784 Brautigan Sept. 4, 1923 1,490,795 BearApr. 15, 1924 1,610,850 Davidson Dec. 14, 1926 1,646,207 McSheen Oct.18, 1927 1,732,153 Crichton Oct. 15, 1929 1,887,487 Geer Nov. 15, 19321,912,483 Hummel et al June 6, 1933 1,959,722 Lackner May 22, 19342,363,138 Moore Nov. 21, 1944 2,364,471 Parker Dec. 5, 1944

